315132440 has 32 divisors (see below), whose sum is σ = 810341280. Its totient is φ = 108045312.

The previous prime is 315132413. The next prime is 315132443. The reversal of 315132440 is 44231513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315132443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562457 + ... + 563016.

It is an arithmetic number, because the mean of its divisors is an integer number (25323165).

Almost surely, 2^315132440 is an apocalyptic number.

It is an amenable number.

315132440 is an abundant number, since it is smaller than the sum of its proper divisors (495208840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315132440 is a wasteful number, since it uses less digits than its factorization.

315132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125491 (or 1125487 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 315132440 is about 17751.9700315204. The cubic root of 315132440 is about 680.5045563252.

Adding to 315132440 its reverse (44231513), we get a palindrome (359363953).

The spelling of 315132440 in words is "three hundred fifteen million, one hundred thirty-two thousand, four hundred forty".